Palabras repetitivas no entiedo muy bien

::::::Datos de los Drivers:::::::

   Kernel driver in use: agpgart-intel
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07)
   Subsystem: Acer Incorporated [ALI] Device [1025:048a]
   Kernel driver in use: i915
   Kernel modules: i915
00:02.1 Display controller [0380]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a43] (rev 07)
   Subsystem: Acer Incorporated [ALI] Device [1025:048a]
--
   Kernel driver in use: uhci_hcd
00:1a.1 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 [8086:2938] (rev 03)
   Subsystem: Acer Incorporated [ALI] Device [1025:048a]
   Kernel driver in use: uhci_hcd
00:1a.7 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 [8086:293c] (rev 03)
   Subsystem: Acer Incorporated [ALI] Device [1025:048a]
   Kernel driver in use: ehci_hcd
00:1b.0 Audio device [0403]: Intel Corporation 82801I (ICH9 Family) HD Audio Controller [8086:293e] (rev 03)
   Subsystem: Acer Incorporated [ALI] Device [1025:048a]
   Kernel driver in use: snd_hda_intel
   Kernel modules: snd-hda-intel
00:1c.0 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 [8086:2940] (rev 03)
   Kernel driver in use: pcieport
   Kernel modules: shpchp
00:1c.1 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 [8086:2942] (rev 03)
   Kernel driver in use: pcieport
   Kernel modules: shpchp
00:1c.2 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 3 [8086:2944] (rev 03)
   Kernel driver in use: pcieport
   Kernel modules: shpchp
00:1d.0 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 [8086:2934] (rev 03)
   Subsystem: Acer Incorporated [ALI] Device [1025:048a]
   Kernel driver in use: uhci_hcd
00:1d.1 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 [8086:2935] (rev 03)
   Subsystem: Acer Incorporated [ALI] Device [1025:048a]
   Kernel driver in use: uhci_hcd
00:1d.2 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 [8086:2936] (rev 03)
   Subsystem: Acer Incorporated [ALI] Device [1025:048a]
   Kernel driver in use: uhci_hcd
00:1d.3 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 [8086:2939] (rev 03)
   Subsystem: Acer Incorporated [ALI] Device [1025:048a]
   Kernel driver in use: uhci_hcd
00:1d.7 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 [8086:293a] (rev 03)
   Subsystem: Acer Incorporated [ALI] Device [1025:048a]
   Kernel driver in use: ehci_hcd
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev 93)
00:1f.0 ISA bridge [0601]: Intel Corporation ICH9M LPC Interface Controller [8086:2919] (rev 03)
--
   Kernel modules: lpc_ich
00:1f.2 SATA controller [0106]: Intel Corporation 82801IBM/IEM (ICH9M/ICH9M-E) 4 port SATA Controller [AHCI mode] [8086:2929] (rev 03)
   Subsystem: Acer Incorporated [ALI] Device [1025:048a]
   Kernel driver in use: ahci
   Kernel modules: ahci
00:1f.3 SMBus [0c05]: Intel Corporation 82801I (ICH9 Family) SMBus Controller [8086:2930] (rev 03)
   Subsystem: Acer Incorporated [ALI] Device [1025:048a]
   Kernel modules: i2c-i801
04:00.0 Network controller [0280]: Atheros Communications Inc. AR9287 Wireless Network Adapter (PCI-Express) [168c:002e] (rev 01)
   Subsystem: Foxconn International, Inc. Device [105b:e034]
   Kernel driver in use: ath9k
   Kernel modules: ath9k
05:00.0 Ethernet controller [0200]: Broadcom Corporation NetLink BCM57780 Gigabit Ethernet PCIe [14e4:1692] (rev 01)
   Subsystem: Acer Incorporated [ALI] Device [1025:048a]
   Kernel driver in use: tg3
   Kernel modules: tg3
::::::::::::::::::::::::::::::::::::::::::

Problema que sale en pantalla UBUNTU SERVER 12.04LTS

ath: phy0: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff
ath: phy0: Could not stop RX, we could be confusing the DMA engine when we start RX up
ath: phy0: Failed to stop TX DMA, queues=0x10f!
ath: phy0: Chip reset failed
ath: phy0: Unable to reset channel, reset status -22
ath: phy0: Unable to set channel

alguno sabe a que se debe estos errores y si hay alguna solucion? me ha pasado 2 veces

EDITO: Quiero hacer saber que la duda no es mia, es de un amigo que necesita ayuda en su server linux, gracias por leer. ^^